Knapsack Pro in Queue Mode will split tests in a dynamic way across parallel CI nodes to ensure each CI node finishes work at a similar time.
Thanks to that your CI build time is as fast as possible. It works with many supported CI servers.

We are using CircleCI and we noticed that builds were being limited by the slowest parallelized container. Knapsack Pro was really east to setup and we saw huge improvements right away. Thank you for making this tool!

I just logged into my account expecting it to say that I needed to add a credit card and was so surprised and delighted to see the trial doesn't count usage by calendar days but by testing days! This is incredible! I love it!!!

I just wanted to say that I really appreciate that small but very huge feature. Thank you for being so thoughtful :)